Milk frother



FIG. 1 is a perspective view of a milk frother showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a top plan view thereof.

The broken line showing of a coffee maker in FIGS. 1-5 depicts environment and forms no part of the claimed design. All other broken lines depict portions of the milk frother that form no part of the claimed design. 

CLAIM The ornamental design for a milk frother, as shown and described. 